Try

import matplotlib.pyplot as plt
plt.plot([1,2,3])
plt.show(block=False)
# other code
# [...]

# Put
plt.show()
# at the very end of your script to make sure Python doesn't bail out
# before you finished examining.

show()文档说:

在非交互模式下，显示所有图形并阻塞直到图形关闭;在交互模式下，除非在从非交互模式切换到交互模式之前创建了图形，否则没有效果(不推荐)。在这种情况下，它会显示数字，但不会阻塞。 单个实验关键字参数block可以被设置为True或False以覆盖上面描述的阻塞行为。

使用plt.show(block=False)，并在脚本的末尾调用plt.show()。

这将确保脚本完成时窗口不会关闭。

如果你想打开多个图形，同时保持它们全部打开，这段代码适合我:

show(block=False)
draw()

在我的系统上，show()没有阻塞，尽管我希望脚本在继续之前等待用户与图形交互(并使用'pick_event'回调来收集数据)。

为了阻止执行直到绘图窗口关闭，我使用了以下方法:

fig = plt.figure()
ax = fig.add_subplot(1,1,1)
ax.plot(x,y)

# set processing to continue when window closed
def onclose(event):
    fig.canvas.stop_event_loop()
fig.canvas.mpl_connect('close_event', onclose)

fig.show() # this call does not block on my system
fig.canvas.start_event_loop_default() # block here until window closed

# continue with further processing, perhaps using result from callbacks

但是请注意，canvas.start_event_loop_default()产生了以下警告:

C:\Python26\lib\site-packages\matplotlib\backend_bases.py:2051: DeprecationWarning: Using default event loop until function specific to this GUI is implemented
  warnings.warn(str,DeprecationWarning)

尽管脚本仍然在运行。

使用matplotlib调用不会阻塞:

使用画():

from matplotlib.pyplot import plot, draw, show
plot([1,2,3])
draw()
print('continue computation')

# at the end call show to ensure window won't close.
show()

使用交互模式:

from matplotlib.pyplot import plot, ion, show
ion() # enables interactive mode
plot([1,2,3]) # result shows immediatelly (implicit draw())

print('continue computation')

# at the end call show to ensure window won't close.
show()

下面是我找到的最简单的解决方案(线程阻塞代码)

plt.show(block=False) # this avoids blocking your thread

plt.pause(1) # comment this if you do not want a time delay

# do more stuff

plt.show(block=True) # this prevents the window from closing on you